Finding the Third Proportional to 254,870 and 554,042

Step by Step Solution

1. Step 1: Write the proportion equation
   254,870 : 554,042 = 554,042 : x
2. Step 2: Convert to fraction form
   254,870/554,042 = 554,042/x
3. Step 3: Cross multiply
   254,870x = 554,042 × 554,042
4. Step 4: Simplify right side
   254,870x = 306,962,537,764
5. Step 5: Solve for x
   x = 306,962,537,764/254,870
6. Step 6: Final answer
   x = 1,204,388.66